Control apparatus.



No. 872,990. PATENTED DEC. 3. 1907.

A. T. OROGKER. CONTROL APPARATUS.

- APPLICATION FILED IAB. 21, 1907.

2 SHEETS-SHEET 1 Witnesses-- mveniar 37M Arthur .7 02x14; M; W b,

PATENTED DEC. 3, 1907.

A. T. OROGKER.

CONTROL APPARATUS.

APPLIOA'HOI FILED XAB. 21, 1907.

2 SHEETS-SHEET 2.

INYE'NTUH ARTHUR 2? CHUEKEH A BY UNITED STATES ARTHUR T. CROCKEB,

PATENT OFFICE.

OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, ACORPORATION OF N EW YORK. U

CONTROL APPARATUS.

R... 872,990. Specification of Letters Patent. Patented Dec. 3, 1907.

Original application filed January 9- 1906. Serial N0. 240.148. Dividedand this application filed larch 21, 1907. Serial No. 363,565

To all whom it may concern:

Be it known that I, ARTHUR T. OnocKEB, a citizen of the United States,residing at Schenectady, county of Schenectady, State of New York, haveinvented certain new and useful Im rovements in Control Apparatus, ofwhich t e following is a specification.

This application is a divi ion of m nding application Serial No.240,143, fifedflan. 9, 1905, for improvements in control apparatus, inwhich the present invention is fully describedand illustrated. I Myinvention relates to control apparatus for electric motorsand-particularly to the type of control apparatus set forth for jexamplein the atent to Frank E. Case, No. 801,214, date Oct. 10, 1905, forsystem f motor control. P

One of the objects of the present invention is to provide an improvedmechanism for operating the emergency air-brake valve and, the emergencycircuit-breaker when the controllcr handleis released by the motorman.

Other objects of my invention will appear from the following descriptionwhich, when taken in connection with the drawings, dis closes oneembodiment of my invention.

In the accompanying drawings in which the same parts are referred to bythe same reference characters throughout all fife figures, Figure 1 is aside elevation partly 111 section with a portion of the casing removedof a portion of a controller constructed in accordance with myinvention; Fig. 2 is a detail of the u per portion of the controllerparts of whic are removed in order to show the mechanism directly,fssociated with the emergency air-brake valve; Fig. 3 is a sectiontaken a roxirnately'on the line 3-3 of Fig. 1; and 4 is an elevation onthe line 4-4 of Fig. looking in the direction of the arrows. e

A represents a rtion of the controller casing within whic are supportedthe controller parts. B isthe controller 0 linder. O indicates thereversing switch an D the controller handle. These parts ma be'of anyusual or desired construction. he controller handle D is connected toand 'ilirectl 0 crates the shaft 1 which extends throng t e top of thecontroller casin and is suprted at its lower end within t I e boss 2adacent the u per end of the controller cylindot.-

This s aft '1, through certain flexible connections and gears, isconnected to the controller cylinder B and by the rotation of this shaft1 the desired rotation of the cylinderB is effected. The constructionand operation of the parts intermediate the shaft] and the cylinder Bare fully set forth in my co-pending a plication Serial No. 240,143heretofore re erred to and as these devices form no part of the presentinvention, the descri tion 6f them will not be repeated.

e emergency air-brake apparatus and the emergency circuit-breaker in thecontrolv ler illustrated are located near the top of the casing. Theusual emergency valve shown at E has pro'ecting from its casing thevalve stem 5. A dog 6 is ivotally secured at 7 to a bracket 8 attache tothe back of the controller casing. The valve stem 5 lies directly withinthe plane of movement of the dog Q and is adapted to be engaged by it.When the r'everser is in its off position the dog 6 is prevented fromforcing the valve stem 5 vided at one end with a notch 10, one we 1 ofwhich enga es withthe u per end of the dog 6. The r0 9 is oonnecte atits other end to (me arm of a bell-crank lever 11 mounted on a stud 12.The other arm of this bell-crank lever is connected by a link 13 withthe collar 14 secured to the reverser shaft 15. the reverser shaft ismoved in either direction in order to give forward or reverse motorconnections, the bell-crank lever 11 is the right, thereby releasing thedog 6 from engagement with the wall of the groove or notch l0. A bar orshoe 18 is slidingly mounted adjacent the dog 6 and is provided with alug 19 which engages with a shoulder 20 on the dog 6 when the shoe 18 ismoved upwardly, thereby causing the dog 6 to force the valve stem 5inwardly and causing the brake to be applied. A convenient way formounti the shoe 18 consists in v assing rivets or olts 21 through slots22 in t e shoe 18, the rivets or bolts 21- being secured in the bracket8. The shoe 18 is actuated by sliding cam23keyed to the shaft 1. Thlscam has a flange 24 which in all angular positions of the shaft 1 isbeneath the. projecting shoulder 26 of the shoe 18. The cam 23 isnormally held in its raised position by means of a spring 27 whichengages at its upper end with the cam 23 and at its lower end with acollar 28 secured to the shaft 1. hen the motorinan places his hand onthe controller oscillated in a direction to move the rod 9 to inwardlyby means of the rod 9 which is ro- When , 23 brings the cam flange 24into alinement" handle he de resses the button and thereby through t epin 31 and the levers 32' and 33 depresses the sliding key 34 whichbears at its ower end upon the cam 23, thus ressing this cam downwardagainst the action of the spring 27. This movement of the cam with aroller 36 carried upon the end 'of the arm 37 of the emergency circuitbreaker which is mounted for rotation on a short shaft 38. Thiscircuit-breaker may be of any known or approved form and as showncomprises two contact fingers 39 which engage with the fixed contacts40. When the handle of the controller is turned, the camflange 24engages with the roller 36, thereby rotating the circuit-breaker andbringing the contact fingers 39 into engagement with the fixed contacts40. Know, while the controller handle is in 'one of its runningpositions, the button 30 is released, the cam 23 being moved downwardlto release the brakes until the control er turned to the off positionwhen, as shown in Fig. 3, the end of the cam'flange 24 just clears theroller 36. ,If, therefore, while the reverser is in one of its runningpositions and the controller handle is in a running position, the button30' is released, the circuit. is opened and the brakes are at onceapplied and the'controllercircuit cannot be restored or the brakesreleased until the controller handle is returned to its off position. Inthe 05 position of the controller handle when the reverser is in one ofits running positions the brakes may be releasedand applied at will byde ressl or releasi the button 30.

Altl iough fhave descr ibed the present in- -vention as embodied in acertain form of con-' troller, I wish it distinctly understood that I donot desire to limit my invention to any particular form of controller asit is obvious that it may be applied to many types.

What I claim'as new and-desire to secure by Letters Patent of the UnitedStates, is, L In a controller, an emergency air-brake valve, acircuit-breaker, a controller shaft and a cam slidingly mounted thereon,mechamsm associated with the controller handle moving said camintooperative relation fo 'to the circuit-breaker, and means operativeupon release of the controller handle to-move said cam out of operativeengagement with shaft operativel trolling said member, means for movingration brings the roller 36 beneath the cam flange 24 thereby preventingthe cam from handle is re-" breaker,

the circuit-breaker and into operative en- 'gagement with said emergencyvalve.

2. In combination, a controlling handle, a connected to said handle, abrake-control ing device, a member slidably mounted on said shaft andarra d'to cooperate with, said brake-controlling evice to causeapplication of the brakes, means ineluding mechanism associated with thesaid handle for controlling said member, means for moving it into itsbrake-applying osition upon release of the said han le, an meansoperative to automatically lock said memher in said brake-applyingposition.

3. In combination, a controller'shaft and handle, a brake-controllingdevice, a member slidably mounted on thecontroller shaft and arranged tocooperate with said brakec'ontrolling device to cause the application ofthe brakes, means including mechanism associated with the controllerhandle for conit into its brake-applyi position upon release of thecontroller han le, and means operative to automatically lock said memberin its brake-afpplying position in, the running positions 0 thecontroller. a

4. In combination, a controller shaftand handle, a brake-controllingdevice, a member slidably mounted on the controller shaft and arrangedto cooperate with saidbrakecontrolling, evice tocause the application ofthe bi-aka'means inclliding mechanism associated withjgthe contr llerhandlefor controlli said membenme nsfor moving it into its bra -applcontroller l? "ng sition upon release of the and e, means operatlve toautomatically lock. said member in its brake----' a l ition, a reversiswitch, and niia n d o ti' olled by the rd v ersing switch for llockingsaid member out of its brakea sition.,

I II CgIblDGtiOH, a controller shaft and handle, a brake controllingdevice, a circuit a cam slidably mounted upon the controller shaft,mechanism associated with the controller handle for moving said cam intooperative relation to the circuit-breaker so that the cam closes the.circuit-breaker when 'thehandle is rotated, and means operative uponrelease of the controller handle to move said cam out of operativerelation to the circuit-breaker and into brakeapplying relation to thebrake-controllingdevice ,the parts being constructed and arranged sothat the circuit-breaker is adapted to lock the cam in its brak tion ifthe controller handle n a running sition.

' 6. In comb igation, a controller shaft and handle, a brake-controllingdevice, ,aicircuit- 1 sl da y m i h d dn e troller shaft, 'r'riechanismassociated with the is re eased while controller handle for moving-saidcam into operative relation to the circuit-breaker so -applying posithatthe cam closes the circuitsbreaker' when the handle is rotated, meansoperative upon release of the controller handle to move said cam out ofOperative relation to the circuitbreaker and into brake-applyingrelation to said brake-controlli device, and means for opening said.circuit-breaker and locking said cam in its brake-applying position whenthe cam is moved out of operative relation to the circuit-breaker.

handle, a brake-controlling device, a circuitbreaker, a cam slidablymounted on the con troller shaft, mechanism associated with thecontroller handle for moving said cam into operative relation to thecircuit-breaker so that the cam closes the circuit breaker when thehandle is rotated, means operative upon release ofthe controller handleto move said cam out of operative relation to the circuitbreaker andinto brake-applying relation to the brake-controlling device, means foropening said circuit-breaker when the cam is moved out of operativerelation thereto, and a projection on said circuit-breaker adapted toengage with said cam tolock it in its brake-applying position if thecontroller handle is released while in a running position. l

i 8. The shaftof a controller, a carn operatively connected thereto, acircuit breaker,- a

controlling means therefor o erated from said cam, and an operatingevice having two motions, one motion adapted to rotate the controllercylinder, the other inotio'n adapted to actuate said dam to place itinto" position to control the circuit breake 9. The shaft of acontroller, a cam operatively connected thereto, a circuit breaker, acontrollingrneans therefor operated from said cam, an operating devicehaving twom'otions,

one motion ada ted to rotate the controller cylinder, the ot er motionadapted to actuate said cam to place it into position to control thecircuit breaker, and means to prevent such shifting except from normalposition.

10. The shaft ofa controller, a cam o ratively connected thereto, acircuit brea "er, a controlling means therefor operated from said camand an operating device having two motions, one motion adapted to rotate7. In combination, a controller shaft and the controller cylinder, theother motion adanted to actuate said cam to place it into position tocontrolthe circuit breaker, in

combination with means to automatically break said'circuit upon releaseof controller handle.

' 11. The shaft of a controller, a cam operatively connected thereto, acircuit breaker, a controlling means therefor operatedfrom said cam, andan operating device having two motions, one motion adapted to rotate thecontroller cylinder, the other motion adapted to actuate said .cam toplace it into position to control the circuit breaker, in combinationwith means to prevent such shifting except from normal osition and meansto automatically brea said circuit upon release of controller-handle.

, 12; Adevice of the kind specified, compris ing a rotating controllerarm, an operating handle carried thereby, a controller shaft, ,a notchedcam slidable thereon, a circuit breaker, and an operating arm' thergf orcontrolled by said cam when said opera ng handle is actuated.

- In witness whereof, I have hereunto set my hand this 20th day ofMarch, 1907;

ARTHUR T. OROCKER. Witnesses:

BENJAMIN B. HULL, HELEN OnFoBD.

